PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/02-22:58:00
G01     60.5           30.7               11.0 +/-    0.73      18.9 +/-    0.73  0.050 / 0.090
G07     142.2          23.0               14.2 +/-    1.69      29.0 +/-    1.69  0.050 / 0.090
G11     49.4           25.8               10.2 +/-    1.17      19.5 +/-    1.17  0.070 / 0.170
G13     263.5          35.3               13.8 +/-    1.31      21.7 +/-    1.31  0.060 / 0.190
G15     293.8          16.6                9.9 +/-    1.64      23.8 +/-    1.64  0.030 / 0.030
G17     251.1          72.4               12.7 +/-    0.54      13.3 +/-    0.54  0.030 / 0.030
G18     43.0           13.5                8.0 +/-    1.31      20.6 +/-    1.31  0.040 / 0.060
G19     232.4          49.9               13.4 +/-    1.09      16.9 +/-    1.09  0.030 / 0.070
G28     36.0           56.5                9.9 +/-    0.47      11.6 +/-    0.47  0.090 / 0.250
G30     142.9          50.1               13.5 +/-    0.86      17.0 +/-    0.86  0.080 / 0.260