PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/01-23:57:50
G01     66.5           32.1                6.9 +/-    0.68      11.5 +/-    0.68  0.050 / 0.070
G07     138.9          23.6                9.5 +/-    0.32      19.2 +/-    0.32  0.040 / 0.110
G11     50.4           27.2                5.7 +/-    2.24      10.7 +/-    2.24  0.040 / 0.050
G13     269.3          37.6                9.9 +/-    1.13      15.0 +/-    1.13  0.050 / 0.060
G15     299.1          16.0                6.4 +/-    2.42      15.5 +/-    2.42  0.040 / 0.040
G17     241.7          74.3                8.6 +/-    0.58       8.9 +/-    0.58  0.030 / 0.040
G18     43.9           14.0                4.6 +/-    1.26      11.8 +/-    1.26  0.060 / 0.110
G19     226.3          44.6               10.7 +/-    1.35      14.6 +/-    1.35  0.070 / 0.130
G28     19.1           59.8                8.7 +/-    0.56       9.9 +/-    0.56  0.070 / 0.170
G30     139.0          58.4                9.7 +/-    0.70      11.1 +/-    0.70  0.070 / 0.200