PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/25-16:57:50
G02     202.9          29.0               11.8 +/-    3.99      21.2 +/-    3.99  0.180 / 0.400
G06     159.9          66.5               10.7 +/-    1.04      11.6 +/-    1.04  0.200 / 0.380
G12     306.6          15.7                8.0 +/-    2.75      19.5 +/-    2.75  0.090 / 0.150
G17     32.8           51.7                7.9 +/-    0.52       9.8 +/-    0.52  0.080 / 0.170
G19     343.9          68.1                8.6 +/-    1.02       9.2 +/-    1.02  0.050 / 0.110
G24     300.6          37.2                9.3 +/-    0.94      14.2 +/-    0.94  0.040 / 0.110
G28     98.8           33.7                9.6 +/-    0.83      15.6 +/-    0.83  0.070 / 0.080