PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/25-00:57:40
G01     77.3           33.3                8.1 +/-    1.02      13.2 +/-    1.02  0.030 / 0.060
G07     134.0          36.3               10.5 +/-    1.09      16.3 +/-    1.09  0.030 / 0.060
G11     60.3           36.5                5.7 +/-    0.73       8.8 +/-    0.73  0.040 / 0.040
G13     282.3          37.4                8.5 +/-    0.83      12.9 +/-    0.83  0.020 / 0.040
G15     306.6          14.5                4.9 +/-    1.78      12.4 +/-    1.78  0.070 / 0.090
G17     225.1          62.1               10.3 +/-    1.45      11.5 +/-    1.45  0.070 / 0.110
G19     220.5          37.3               11.3 +/-    1.54      17.2 +/-    1.54  0.060 / 0.120
G28     11.0           60.2                6.2 +/-    0.55       7.1 +/-    0.55  0.060 / 0.120
G30     129.2          62.7               11.4 +/-    0.62      12.6 +/-    0.62  0.060 / 0.090