PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/26-17:57:40
G02     217.0          58.8                9.7 +/-    1.03      11.2 +/-    1.03  0.090 / 0.080
G06     54.5           71.9                9.3 +/-    0.30       9.7 +/-    0.30  0.050 / 0.080
G12     319.9          40.2                8.8 +/-    1.79      12.7 +/-    1.79  0.060 / 0.070
G17     58.1           31.6                8.1 +/-    3.25      13.8 +/-    3.25  0.050 / 0.070
G19     36.5           51.1                8.4 +/-    1.63      10.5 +/-    1.63  0.030 / 0.030
G24     262.7          41.7               12.5 +/-    2.09      17.6 +/-    2.09  0.030 / 0.030
G28     123.0          13.3                8.7 +/-    2.36      22.5 +/-    2.36  0.040 / 0.040