PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/31-19:43:00
G01     43.1           19.0               12.3 +/-    4.14      27.7 +/-    4.14  0.080 / 0.230
G06     174.8          36.4               16.4 +/-    1.55      25.4 +/-    1.55  0.100 / 0.220
G13     240.8          24.3               16.3 +/-    2.09      32.4 +/-    2.09  0.260 / 0.270
G15     275.0          13.2               14.0 +/-    1.79      36.3 +/-    1.79  0.270 / 0.250
G17     344.9          74.1               15.6 +/-    0.40      16.1 +/-    0.40  0.060 / 0.090
G19     265.0          65.5               15.6 +/-    0.70      17.0 +/-    0.70  0.090 / 0.090
G24     317.4          16.8               14.4 +/-    3.07      34.2 +/-    3.07  0.170 / 0.260
G28     67.1           48.4               14.1 +/-    1.46      18.1 +/-    1.46  0.130 / 0.310
G30     153.5          30.7               14.6 +/-    1.09      25.1 +/-    1.09  0.070 / 0.090