PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/23-17:58:10
G02     16.1           66.9                7.1 +/-    1.30       7.7 +/-    1.30  0.040 / 0.050
G05     154.6          51.0               11.8 +/-    0.92      14.8 +/-    0.92  0.040 / 0.050
G06     48.6           22.7                6.6 +/-    0.52      13.5 +/-    0.52  0.270 / 0.440
G12     205.8          77.0                8.4 +/-    0.49       8.6 +/-    0.49  0.310 / 0.550
G19     89.0           19.7                9.4 +/-    0.92      20.9 +/-    0.92  0.030 / 0.060
G24     214.3          10.0               12.9 +/-   11.42      35.9 +/-   11.42  0.040 / 0.050
G25     309.2          45.7                8.7 +/-    2.25      11.5 +/-    2.25  0.080 / 0.150
G29     298.4          18.6                9.2 +/-    1.36      21.0 +/-    1.36  0.070 / 0.100