PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/25-23:43:10
G02     235.2          74.1               12.6 +/-    0.42      13.1 +/-    0.42  0.050 / 0.050
G05     172.0          14.2               17.0 +/-    2.93      43.2 +/-    2.93  0.040 / 0.050
G06     41.2           64.4                9.9 +/-    0.64      10.9 +/-    0.64  0.060 / 0.090
G12     320.5          46.1               11.5 +/-    0.52      15.3 +/-    0.52  0.070 / 0.080
G17     68.4           23.5               11.2 +/-    2.72      22.8 +/-    2.72  0.200 / 0.250
G19     53.9           40.1               10.7 +/-    1.08      15.5 +/-    1.08  0.150 / 0.200
G24     247.1          36.2               14.7 +/-    1.78      22.8 +/-    1.78  0.050 / 0.050