PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/27-18:57:40
G02     203.2          32.6                9.8 +/-    1.29      16.3 +/-    1.29  0.150 / 0.320
G06     157.5          68.9               10.0 +/-    0.43      10.6 +/-    0.43  0.160 / 0.230
G12     307.6          16.5                8.3 +/-    3.51      20.0 +/-    3.51  0.090 / 0.080
G17     33.8           51.0               10.2 +/-    0.90      12.7 +/-    0.90  0.060 / 0.070
G19     352.1          66.8                9.7 +/-    0.32      10.4 +/-    0.32  0.040 / 0.040
G24     298.4          38.1                9.2 +/-    2.07      13.9 +/-    2.07  0.040 / 0.040
G28     101.3          32.0                9.3 +/-    1.08      15.7 +/-    1.08  0.040 / 0.020