PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/26-14:42:50
G02     216.7          60.4               12.0 +/-    1.31      13.6 +/-    1.31  0.060 / 0.070
G06     57.1           75.0               10.8 +/-    0.93      11.1 +/-    0.93  0.070 / 0.070
G12     319.0          36.6               10.3 +/-    1.70      15.8 +/-    1.70  0.040 / 0.070
G17     60.1           29.5                9.7 +/-    2.59      17.2 +/-    2.59  0.050 / 0.070
G19     43.1           46.9                9.2 +/-    0.64      12.1 +/-    0.64  0.040 / 0.080
G24     266.2          41.2               11.8 +/-    0.71      16.9 +/-    0.71  0.040 / 0.080
G28     123.9          12.1               12.0 +/-    1.80      32.0 +/-    1.80  0.040 / 0.020