PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/17-00:12:50
G01     38.8           12.7                9.1 +/-    5.09      24.0 +/-    5.09  0.070 / 0.130
G02     199.1          12.7               10.7 +/-    3.27      28.0 +/-    3.27  0.120 / 0.160
G06     177.5          39.9               12.3 +/-    1.14      17.9 +/-    1.14  0.060 / 0.060
G13     233.2          19.4               11.1 +/-    3.26      24.9 +/-    3.26  0.050 / 0.060
G17     13.2           65.8                9.8 +/-    0.70      10.7 +/-    0.70  0.070 / 0.070
G19     289.9          70.6               10.1 +/-    0.91      10.7 +/-    0.91  0.070 / 0.070
G24     313.9          24.5                8.3 +/-    1.63      16.5 +/-    1.63  0.040 / 0.030
G28     73.8           47.5               11.4 +/-    1.45      14.9 +/-    1.45  0.040 / 0.030
G30     155.5          22.8               11.9 +/-    0.73      24.6 +/-    0.73  0.080 / 0.160