PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/31-00:28:10
G10     269.1          39.5               12.8 +/-    1.22      18.8 +/-    1.22  0.150 / 0.180
G13     41.0           16.7                7.4 +/-    1.05      17.7 +/-    1.05  0.170 / 0.240
G15     59.2           49.9                8.5 +/-    0.73      10.8 +/-    0.73  0.190 / 0.680
G16     275.7          11.6               11.0 +/-    2.87      29.7 +/-    2.87  0.190 / 0.680
G20     276.5          42.2                8.1 +/-    0.84      11.3 +/-    0.84  0.110 / 0.220
G21     4.5            72.6               10.6 +/-    0.61      11.0 +/-    0.61  0.120 / 0.190
G24     117.4          15.4               10.4 +/-    1.46      25.6 +/-    1.46  0.060 / 0.060
G27     317.9          20.2               10.3 +/-    1.98      22.7 +/-    1.98  0.060 / 0.070
G29     168.6          30.3               10.1 +/-    1.52      17.7 +/-    1.52  0.040 / 0.040
G32     204.1          12.4               14.6 +/-    4.44      38.7 +/-    4.44  0.040 / 0.040