PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/11-22:28:00
G02     226.1          69.4                7.9 +/-    0.57       8.3 +/-    0.57  0.200 / 0.410
G05     174.0          10.2               -7.4 +/-   19.62     -20.6 +/-   19.62  0.220 / 0.390
G06     44.7           68.5                8.2 +/-    0.56       8.7 +/-    0.56  0.060 / 0.100
G12     319.8          41.5                7.6 +/-    0.60      10.8 +/-    0.60  0.060 / 0.080
G17     64.2           26.8                8.5 +/-    2.20      15.9 +/-    2.20  0.040 / 0.040
G19     49.1           43.0                9.9 +/-    1.14      13.7 +/-    1.14  0.030 / 0.030
G24     253.1          38.6                9.9 +/-    2.05      14.8 +/-    2.05  0.040 / 0.060
G28     126.9          11.2               11.9 +/-    2.43      32.3 +/-    2.43  0.050 / 0.060