PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/26-01:27:50
G02     29.9           57.7               10.3 +/-    0.97      12.0 +/-    0.97  0.030 / 0.020
G05     143.1          59.0               13.5 +/-    0.64      15.5 +/-    0.64  0.030 / 0.020
G06     50.4           21.3                8.7 +/-    2.49      18.5 +/-    2.49  0.020 / 0.040
G12     214.3          73.9               11.6 +/-    0.59      12.0 +/-    0.59  0.030 / 0.030
G19     96.6           11.7               10.9 +/-    2.21      29.2 +/-    2.21  0.110 / 0.230
G25     301.8          51.3               10.3 +/-    2.71      12.8 +/-    2.71  0.150 / 0.220
G29     306.2          28.5                9.6 +/-    1.20      17.4 +/-    1.20  0.060 / 0.060