PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/26-13:42:50
G03     217.9          65.4                9.6 +/-    1.72      10.5 +/-    1.72  0.070 / 0.220
G07     251.2          14.6                7.6 +/-    1.50      19.2 +/-    1.50  0.120 / 0.240
G09     304.5          19.2                7.3 +/-    1.99      16.4 +/-    1.99  0.040 / 0.050
G14     102.0          11.9                8.6 +/-    1.52      23.0 +/-    1.52  0.040 / 0.050
G16     127.7          60.0               11.3 +/-    0.36      12.9 +/-    0.36  0.040 / 0.070
G22     188.7          49.1               10.6 +/-    2.54      13.5 +/-    2.54  0.050 / 0.080
G23     321.9          51.8                9.3 +/-    0.96      11.4 +/-    0.96  0.120 / 0.370
G26     67.6           51.9                8.5 +/-    0.61      10.5 +/-    0.61  0.110 / 0.420
G31     53.8           17.7                7.3 +/-    0.76      17.0 +/-    0.76  0.040 / 0.050