PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/27-19:58:00
G01     43.4           19.4                9.1 +/-    0.79      20.3 +/-    0.79  0.110 / 0.160
G06     175.0          35.7               19.1 +/-    0.76      30.0 +/-    0.76  0.100 / 0.190
G13     241.4          24.7               15.5 +/-    2.04      30.5 +/-    2.04  0.180 / 0.320
G15     275.5          13.4               13.6 +/-    1.01      35.2 +/-    1.01  0.140 / 0.270
G17     342.2          74.5               13.8 +/-    0.75      14.2 +/-    0.75  0.060 / 0.120
G19     263.7          65.2               14.0 +/-    0.80      15.2 +/-    0.80  0.080 / 0.120
G24     317.6          16.3               10.7 +/-    2.61      25.7 +/-    2.61  0.040 / 0.070
G28     66.3           48.7               11.0 +/-    0.48      14.2 +/-    0.48  0.040 / 0.060
G30     153.3          31.2               18.0 +/-    1.62      30.8 +/-    1.62  0.030 / 0.040