PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/11-21:12:30
G02     28.4           59.2               10.5 +/-    0.87      12.0 +/-    0.87  0.040 / 0.030
G05     144.0          59.3               12.6 +/-    0.95      14.4 +/-    0.95  0.040 / 0.030
G06     52.4           17.0                8.7 +/-    1.57      20.7 +/-    1.57  0.040 / 0.050
G12     196.4          69.6               11.1 +/-    0.83      11.8 +/-    0.83  0.040 / 0.060
G19     96.4           14.1               11.5 +/-    2.64      29.4 +/-    2.64  0.100 / 0.120
G25     301.4          51.4               11.7 +/-    2.61      14.5 +/-    2.61  0.110 / 0.160
G29     304.3          24.3               10.0 +/-    0.72      19.8 +/-    0.72  0.030 / 0.030