PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/09-11:42:50
G02     70.4           22.5                4.2 +/-    2.55       8.8 +/-    2.55  0.040 / 0.030
G05     47.5           51.7                5.6 +/-    1.23       6.9 +/-    1.23  0.040 / 0.040
G12     180.2          19.1                5.1 +/-    2.88      11.4 +/-    2.88  0.030 / 0.040
G13     116.1          22.7                7.4 +/-    0.91      15.1 +/-    0.91  0.030 / 0.030
G15     154.0          24.2                4.9 +/-    1.31       9.7 +/-    1.31  0.090 / 0.170
G21     282.3          25.3                6.2 +/-    1.79      12.1 +/-    1.79  0.090 / 0.240
G25     221.7          42.4                7.7 +/-    2.29      10.8 +/-    2.29  0.100 / 0.170
G29     336.5          65.5                6.4 +/-    0.68       7.0 +/-    0.68  0.130 / 0.150