PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/08-15:58:00
G01     72.7           33.1                8.8 +/-    0.76      14.4 +/-    0.76  0.050 / 0.100
G07     136.5          32.6               11.7 +/-    0.63      19.5 +/-    0.63  0.090 / 0.120
G11     54.6           31.6                8.1 +/-    1.61      13.7 +/-    1.61  0.030 / 0.030
G13     276.3          37.8                9.7 +/-    1.14      14.7 +/-    1.14  0.030 / 0.030
G15     305.8          13.8                7.6 +/-    1.12      19.6 +/-    1.12  0.090 / 0.110
G17     230.5          67.1               12.5 +/-    0.66      13.4 +/-    0.66  0.070 / 0.070
G18     50.2           18.9                9.0 +/-    3.02      20.3 +/-    3.02  0.080 / 0.180
G19     222.9          37.8               12.9 +/-    2.40      19.4 +/-    2.40  0.130 / 0.210
G28     16.6           59.7               11.2 +/-    1.24      12.7 +/-    1.24  0.040 / 0.070
G30     133.7          64.0               12.2 +/-    0.32      13.4 +/-    0.32  0.070 / 0.070