PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/28-03:42:40
G01     87.5           32.2               10.0 +/-    0.66      16.7 +/-    0.66  0.050 / 0.060
G07     127.8          40.9               11.4 +/-    0.99      16.4 +/-    0.99  0.050 / 0.060
G11     64.2           37.8                6.3 +/-    0.57       9.5 +/-    0.57  0.040 / 0.060
G13     291.5          37.2                5.3 +/-    1.72       8.1 +/-    1.72  0.040 / 0.060
G17     215.2          58.7                8.6 +/-    0.75       9.9 +/-    0.75  0.080 / 0.250
G18     58.0           21.4                4.2 +/-    0.96       8.9 +/-    0.96  0.090 / 0.220
G19     215.5          27.4                5.3 +/-    2.28       9.8 +/-    2.28  0.070 / 0.110
G28     348.3          61.7                5.2 +/-    0.54       5.9 +/-    0.54  0.070 / 0.110
G30     109.5          75.8                9.3 +/-    1.24       9.6 +/-    1.24  0.030 / 0.030