PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/20-23:57:40
G01     38.5           12.3                7.8 +/-    4.47      20.7 +/-    4.47  0.090 / 0.140
G02     199.2          13.3                8.9 +/-    3.07      23.2 +/-    3.07  0.100 / 0.150
G06     177.2          40.8                9.7 +/-    1.26      14.0 +/-    1.26  0.030 / 0.040
G13     232.7          19.0                9.1 +/-    2.63      20.6 +/-    2.63  0.040 / 0.030
G17     13.9           65.3                8.1 +/-    0.69       8.8 +/-    0.69  0.110 / 0.160
G19     292.2          70.8                8.7 +/-    0.86       9.2 +/-    0.86  0.330 / 0.200
G24     313.7          24.9                7.5 +/-    1.75      14.8 +/-    1.75  0.050 / 0.060
G28     74.5           47.2                7.8 +/-    1.07      10.2 +/-    1.07  0.040 / 0.050
G30     155.6          22.0                9.1 +/-    1.25      19.1 +/-    1.25  0.090 / 0.140