PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/21-00:58:10
G02     204.6          41.0                9.9 +/-    2.04      14.2 +/-    2.04  0.060 / 0.050
G06     163.3          71.6                9.7 +/-    0.40      10.1 +/-    0.40  0.050 / 0.060
G12     309.2          17.1                7.3 +/-    4.26      17.4 +/-    4.26  0.050 / 0.040
G17     41.9           43.9                7.1 +/-    1.64       9.7 +/-    1.64  0.040 / 0.030
G19     10.9           62.2                8.2 +/-    0.61       9.2 +/-    0.61  0.170 / 0.190
G24     289.6          41.4               12.0 +/-    3.69      17.1 +/-    3.69  0.110 / 0.160
G28     105.6          30.9                8.0 +/-    1.15      13.8 +/-    1.15  0.070 / 0.100