PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/14-17:42:50
G02     218.7          60.1               12.6 +/-    1.56      14.3 +/-    1.56  0.050 / 0.060
G06     51.9           71.8               10.9 +/-    0.39      11.4 +/-    0.39  0.070 / 0.060
G12     319.9          39.6               10.2 +/-    1.34      14.9 +/-    1.34  0.060 / 0.080
G17     61.8           28.1                9.1 +/-    1.82      16.6 +/-    1.82  0.030 / 0.080
G19     45.4           45.5                8.6 +/-    1.16      11.6 +/-    1.16  0.060 / 0.070
G24     263.7          40.8               10.8 +/-    1.91      15.5 +/-    1.91  0.050 / 0.070
G28     125.1          10.9               11.7 +/-    1.94      32.1 +/-    1.94  0.070 / 0.110