PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/21-12:12:50
G01     317.4          22.3                3.9 +/-    2.11       8.1 +/-    2.11  0.130 / 0.130
G08     252.4          10.9                4.8 +/-    1.55      13.0 +/-    1.55  0.210 / 0.120
G10     87.1           49.5                4.0 +/-    1.08       5.1 +/-    1.08  0.050 / 0.050
G11     297.7          25.5                4.1 +/-    1.38       7.9 +/-    1.38  0.040 / 0.050
G14     314.7          71.7                4.3 +/-    0.81       4.5 +/-    0.81  0.040 / 0.040
G18     297.6          45.9                6.1 +/-    7.28       8.1 +/-    7.28  0.040 / 0.050
G20     109.4          25.5                4.2 +/-    0.93       8.1 +/-    0.93  0.030 / 0.030
G22     304.2          17.1                2.7 +/-    2.55       6.3 +/-    2.55  0.030 / 0.050
G31     176.6          45.4                6.3 +/-    0.95       8.4 +/-    0.95  0.190 / 0.220
G32     5.8            67.0                4.0 +/-    0.50       4.3 +/-    0.50  0.150 / 0.200