PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/31-18:57:50
G01     39.3           13.7                7.7 +/-    0.97      19.7 +/-    0.97  0.040 / 0.080
G02     199.4          10.3                0.4 +/-   14.39       1.1 +/-   14.39  0.040 / 0.080
G06     174.7          41.0               12.3 +/-    0.63      17.7 +/-    0.63  0.090 / 0.210
G13     234.3          20.6               11.3 +/-    1.19      24.6 +/-    1.19  0.090 / 0.150
G15     267.6          11.2                8.7 +/-    2.79      23.6 +/-    2.79  0.110 / 0.170
G17     5.2            68.9               11.0 +/-    0.61      11.8 +/-    0.61  0.080 / 0.160
G19     287.0          70.9               10.5 +/-    0.61      11.0 +/-    0.61  0.260 / 0.430
G24     315.2          21.7                7.5 +/-    3.24      15.9 +/-    3.24  0.260 / 0.430
G28     70.1           49.3                9.5 +/-    0.35      12.1 +/-    0.35  0.030 / 0.050
G30     154.3          21.9               11.7 +/-    1.54      24.6 +/-    1.54  0.040 / 0.040