PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/25-19:57:50
G02     18.3           66.0                6.9 +/-    0.41       7.5 +/-    0.41  0.030 / 0.040
G05     153.5          51.5               11.5 +/-    1.34      14.3 +/-    1.34  0.030 / 0.060
G06     48.6           23.0                6.9 +/-    0.45      14.2 +/-    0.45  0.030 / 0.030
G12     211.4          77.4                7.0 +/-    1.07       7.1 +/-    1.07  0.020 / 0.030
G19     89.5           19.1                9.5 +/-    0.60      21.3 +/-    0.60  0.040 / 0.050
G24     214.6          10.0                8.8 +/-   28.21      24.4 +/-   28.21  0.040 / 0.050
G25     309.3          45.4                5.5 +/-    2.11       7.4 +/-    2.11  0.060 / 0.100
G29     298.6          18.8                7.4 +/-    1.20      16.8 +/-    1.20  0.060 / 0.080