PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/14-21:58:00
G02     202.7          34.0               15.9 +/-    1.11      25.6 +/-    1.11  0.080 / 0.270
G06     159.5          68.4               13.4 +/-    0.49      14.3 +/-    0.49  0.080 / 0.210
G12     307.1          14.9                9.3 +/-    2.17      23.3 +/-    2.17  0.080 / 0.070
G17     31.5           52.8               11.6 +/-    1.26      14.1 +/-    1.26  0.120 / 0.120
G19     355.0          66.4               11.1 +/-    0.66      12.0 +/-    0.66  0.060 / 0.130
G24     299.1          37.6               11.7 +/-    2.20      17.7 +/-    2.20  0.070 / 0.090
G28     101.5          31.7               12.3 +/-    1.21      20.8 +/-    1.21  0.050 / 0.030