PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/10-13:42:40
G02     203.6          25.5                8.1 +/-    1.61      15.6 +/-    1.61  0.090 / 0.100
G06     162.6          64.9               10.3 +/-    1.20      11.2 +/-    1.20  0.050 / 0.080
G12     305.9          14.9                3.7 +/-    2.19       9.3 +/-    2.19  0.100 / 0.280
G17     32.8           51.6                6.6 +/-    0.72       8.1 +/-    0.72  0.130 / 0.370
G19     336.0          68.6                7.4 +/-    0.73       7.9 +/-    0.73  0.040 / 0.030
G24     300.8          37.4                5.8 +/-    1.15       8.8 +/-    1.15  0.030 / 0.040
G28     97.3           34.9                8.3 +/-    0.67      13.2 +/-    0.67  0.030 / 0.040