PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/22-15:57:30
G02     261.3          77.8                8.6 +/-    0.43       8.7 +/-    0.43  0.130 / 0.130
G05     170.0          21.2                8.5 +/-    0.67      18.1 +/-    0.67  0.140 / 0.130
G06     39.7           50.9                8.1 +/-    0.85      10.1 +/-    0.85  0.060 / 0.150
G12     320.7          58.3                9.7 +/-    0.64      11.2 +/-    0.64  0.090 / 0.180
G17     74.3           21.1                6.8 +/-    2.01      14.5 +/-    2.01  0.060 / 0.070
G19     64.2           32.9                7.7 +/-    3.24      12.7 +/-    3.24  0.080 / 0.110
G24     239.7          30.8               10.5 +/-    1.51      18.1 +/-    1.51  0.030 / 0.030
G25     317.1          16.9                8.4 +/-    3.09      19.9 +/-    3.09  0.030 / 0.030