PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/22-17:58:10
G02     253.6          77.4                7.5 +/-    0.38       7.7 +/-    0.38  0.100 / 0.130
G05     170.3          19.4                9.9 +/-    1.27      22.1 +/-    1.27  0.080 / 0.160
G06     39.7           54.1                7.8 +/-    0.67       9.4 +/-    0.67  0.080 / 0.100
G12     320.9          54.5                6.8 +/-    0.85       8.1 +/-    0.85  0.080 / 0.150
G17     72.2           22.5                6.5 +/-    1.10      13.5 +/-    1.10  0.110 / 0.300
G19     61.5           34.8                8.2 +/-    1.49      13.0 +/-    1.49  0.170 / 0.330
G24     241.8          32.4                8.8 +/-    1.33      14.8 +/-    1.33  0.080 / 0.100
G25     316.9          14.7                4.8 +/-    2.04      12.1 +/-    2.04  0.090 / 0.100