PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/22-01:58:10
G02     59.4           32.5                9.4 +/-    1.46      15.7 +/-    1.46  0.060 / 0.100
G05     58.0           60.4               11.3 +/-    0.42      12.8 +/-    0.42  0.080 / 0.090
G12     184.5          32.9               14.3 +/-    0.74      23.6 +/-    0.74  0.030 / 0.040
G13     128.9          14.7               15.4 +/-    1.80      38.5 +/-    1.80  0.030 / 0.030
G15     164.3          11.5                8.6 +/-   23.81      23.3 +/-   23.81  0.120 / 0.340
G20     218.5          12.1                8.7 +/-   28.22      23.2 +/-   28.22  0.130 / 0.240
G21     270.6          16.4               13.8 +/-    2.26      33.2 +/-    2.26  0.100 / 0.080
G25     238.9          52.4               14.4 +/-    2.91      17.7 +/-    2.91  0.110 / 0.100
G29     327.2          53.1               11.8 +/-    1.60      14.3 +/-    1.60  0.240 / 0.350