PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/22-20:27:50
G02     27.9           59.5                7.8 +/-    0.52       8.9 +/-    0.52  0.040 / 0.050
G05     144.5          59.2               11.4 +/-    0.74      13.0 +/-    0.74  0.030 / 0.050
G06     52.5           16.8                6.5 +/-    0.67      15.5 +/-    0.67  0.030 / 0.040
G12     195.2          69.3                7.8 +/-    0.64       8.3 +/-    0.64  0.050 / 0.040
G19     96.2           14.3                8.9 +/-    2.26      22.6 +/-    2.26  0.060 / 0.060
G25     301.3          51.5                7.2 +/-    1.10       8.9 +/-    1.10  0.040 / 0.070
G29     304.3          24.3                9.4 +/-    1.44      18.6 +/-    1.44  0.060 / 0.060