PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/30-15:58:10
G02     4.9            73.4               10.6 +/-    0.39      11.0 +/-    0.39  0.060 / 0.090
G05     164.5          38.8               13.4 +/-    1.29      19.8 +/-    1.29  0.050 / 0.070
G06     43.8           34.7               10.1 +/-    1.29      16.2 +/-    1.29  0.120 / 0.240
G12     290.5          77.3               12.3 +/-    0.60      12.6 +/-    0.60  0.170 / 0.300
G19     83.3           21.0               10.1 +/-    2.11      21.7 +/-    2.11  0.030 / 0.030
G24     224.1          17.8               14.7 +/-    1.61      34.2 +/-    1.61  0.030 / 0.020
G25     314.7          38.6               10.8 +/-    0.75      16.0 +/-    0.75  0.050 / 0.050
G29     293.8          17.1               11.0 +/-    2.49      25.9 +/-    2.49  0.040 / 0.060