PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/30-18:57:40
G02     222.8          65.8                9.2 +/-    0.68      10.0 +/-    0.68  0.120 / 0.300
G06     46.9           68.9                7.8 +/-    0.39       8.3 +/-    0.39  0.170 / 0.400
G12     319.4          40.0                6.4 +/-    1.17       9.3 +/-    1.17  0.050 / 0.050
G17     61.0           30.0                6.7 +/-    2.45      11.7 +/-    2.45  0.050 / 0.050
G19     47.1           44.0                8.1 +/-    1.23      11.1 +/-    1.23  0.070 / 0.110
G24     257.2          39.4               23.4 +/-    1.75      34.4 +/-    1.75  0.090 / 0.100
G28     125.2          13.9               10.8 +/-    1.86      27.7 +/-    1.86  0.060 / 0.080