PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/26-01:27:30
G02     29.9           57.7               10.0 +/-    0.54      11.6 +/-    0.54  0.030 / 0.030
G05     143.1          59.0               13.9 +/-    0.76      16.0 +/-    0.76  0.030 / 0.040
G06     50.4           21.3                6.3 +/-    0.61      13.5 +/-    0.61  0.030 / 0.040
G12     214.3          73.9               12.7 +/-    0.80      13.2 +/-    0.80  0.030 / 0.040
G19     96.6           11.7               10.4 +/-    1.79      28.0 +/-    1.79  0.120 / 0.300
G25     301.8          51.3                9.1 +/-    1.03      11.3 +/-    1.03  0.090 / 0.280
G29     306.2          28.5                8.5 +/-    1.03      15.4 +/-    1.03  0.050 / 0.060