PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/21-02:12:30
G08     291.4          23.5                6.4 +/-    1.05      12.9 +/-    1.05  0.040 / 0.080
G10     5.4            63.1                7.0 +/-    0.73       7.8 +/-    0.73  0.050 / 0.120
G14     230.6          48.4                9.0 +/-    1.02      11.6 +/-    1.02  0.050 / 0.110
G18     62.5           51.9                7.9 +/-    0.52       9.8 +/-    0.52  0.060 / 0.110
G21     146.0          39.7                9.8 +/-    0.69      14.3 +/-    0.69  0.030 / 0.040
G24     57.2           26.6                8.0 +/-    0.75      15.1 +/-    0.75  0.030 / 0.040
G27     252.4          31.3               10.2 +/-    1.20      17.4 +/-    1.20  0.080 / 0.120
G32     245.4          66.1                8.3 +/-    1.17       9.0 +/-    1.17  0.090 / 0.130