PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/21-23:28:10
G02     72.2           24.4               10.1 +/-    1.06      20.0 +/-    1.06  0.070 / 0.130
G05     45.9           47.5                9.7 +/-    0.91      12.7 +/-    0.91  0.090 / 0.130
G12     180.4          13.5               15.8 +/-    3.13      40.8 +/-    3.13  0.070 / 0.180
G13     114.3          27.0               12.0 +/-    1.26      22.5 +/-    1.26  0.110 / 0.170
G15     156.2          25.3               12.5 +/-    1.86      24.2 +/-    1.86  0.030 / 0.030
G18     224.3          14.9               14.4 +/-   12.76      36.0 +/-   12.76  0.040 / 0.030
G20     228.7          81.5               10.5 +/-    0.79      10.6 +/-    0.79  0.120 / 0.300
G21     285.4          27.9                8.6 +/-    2.12      15.8 +/-    2.12  0.060 / 0.300
G25     212.5          34.9               12.2 +/-    1.26      19.4 +/-    1.26  0.040 / 0.050
G29     343.8          74.2               11.5 +/-    0.72      11.9 +/-    0.72  0.040 / 0.060