PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/25-18:57:50
G01     72.7           33.2               11.3 +/-    0.75      18.6 +/-    0.75  0.100 / 0.290
G07     136.5          32.9               14.5 +/-    0.70      23.9 +/-    0.70  0.080 / 0.320
G11     55.3           32.4               10.9 +/-    1.02      18.2 +/-    1.02  0.040 / 0.090
G13     276.6          37.7               14.5 +/-    0.93      21.9 +/-    0.93  0.070 / 0.100
G15     304.6          14.6               11.0 +/-    3.63      27.6 +/-    3.63  0.040 / 0.040
G17     230.0          64.8               16.0 +/-    1.38      17.5 +/-    1.38  0.030 / 0.040
G18     50.5           19.2                9.8 +/-    1.12      22.0 +/-    1.12  0.060 / 0.110
G19     223.0          38.9               16.4 +/-    1.99      24.3 +/-    1.99  0.070 / 0.130
G28     17.1           59.6               12.1 +/-    0.48      13.8 +/-    0.48  0.030 / 0.040
G30     133.7          62.8               14.9 +/-    1.09      16.6 +/-    1.09  0.040 / 0.040