PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/26-00:42:50
G10     265.9          37.6                9.8 +/-    0.90      14.9 +/-    0.90  0.120 / 0.120
G13     42.3           19.0                8.5 +/-    3.05      19.2 +/-    3.05  0.170 / 0.120
G15     62.4           51.8                8.4 +/-    0.52      10.4 +/-    0.52  0.060 / 0.040
G16     278.5          12.6                9.0 +/-    2.24      23.7 +/-    2.24  0.070 / 0.030
G20     275.2          42.9                8.1 +/-    0.65      11.2 +/-    0.65  0.150 / 0.310
G21     357.7          70.7                9.0 +/-    0.86       9.5 +/-    0.86  0.210 / 0.330
G24     120.0          13.7               10.8 +/-    2.72      27.6 +/-    2.72  0.170 / 0.390
G27     319.1          17.9                7.3 +/-    4.42      16.9 +/-    4.42  0.170 / 0.370
G29     168.3          33.3               10.5 +/-    1.10      17.3 +/-    1.10  0.220 / 0.410