PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/22-14:58:00
G03     224.4          65.7               11.2 +/-    1.33      12.2 +/-    1.33  0.040 / 0.040
G09     304.9          19.9                7.1 +/-    1.23      15.8 +/-    1.23  0.030 / 0.040
G14     101.0          15.6                9.7 +/-    1.24      23.7 +/-    1.24  0.120 / 0.290
G16     117.8          61.2               11.8 +/-    0.25      13.3 +/-    0.25  0.150 / 0.300
G22     187.1          48.5               11.3 +/-    0.39      14.6 +/-    0.39  0.030 / 0.070
G23     326.0          55.5               10.0 +/-    0.54      11.9 +/-    0.54  0.040 / 0.050
G26     62.9           48.6               10.0 +/-    0.47      12.8 +/-    0.47  0.050 / 0.060
G31     54.4           15.6                8.0 +/-    3.36      19.5 +/-    3.36  0.040 / 0.060