PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/19-01:57:40
G02     219.5          64.9                7.1 +/-    1.03       7.7 +/-    1.03  0.060 / 0.080
G06     54.6           76.4                6.1 +/-    0.66       6.3 +/-    0.66  0.080 / 0.090
G12     318.6          36.8                6.0 +/-    1.98       9.2 +/-    1.98  0.050 / 0.140
G17     61.0           28.6                3.6 +/-    1.38       6.5 +/-    1.38  0.070 / 0.070
G19     42.9           47.0                5.8 +/-    0.97       7.6 +/-    0.97  0.200 / 0.300
G24     257.8          40.7                7.6 +/-    4.92      10.9 +/-    4.92  0.140 / 0.300
G28     123.9          14.3                5.4 +/-    1.76      13.6 +/-    1.76  0.050 / 0.040