PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/26-16:58:00
G02     203.4          30.9               10.2 +/-    2.31      17.6 +/-    2.31  0.110 / 0.100
G06     157.3          68.5                9.1 +/-    0.27       9.7 +/-    0.27  0.090 / 0.080
G12     307.7          17.2                9.1 +/-    2.38      21.4 +/-    2.38  0.110 / 0.160
G17     34.6           50.3                8.2 +/-    0.98      10.3 +/-    0.98  0.120 / 0.130
G19     348.7          67.3                8.1 +/-    0.37       8.8 +/-    0.37  0.040 / 0.020
G24     298.7          38.2                9.1 +/-    2.00      13.6 +/-    2.00  0.030 / 0.030
G28     100.6          32.5                8.5 +/-    0.87      14.2 +/-    0.87  0.030 / 0.040