PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/26-17:27:50
G01     116.3          20.0               14.2 +/-    1.21      31.2 +/-    1.21  0.050 / 0.090
G07     87.9           65.2               13.1 +/-    0.52      14.2 +/-    0.52  0.070 / 0.100
G08     44.3           30.4               10.3 +/-    1.27      17.8 +/-    1.27  0.040 / 0.030
G09     176.5          22.6               12.4 +/-    1.16      25.7 +/-    1.16  0.040 / 0.030
G11     103.4          41.2               12.9 +/-    0.72      18.4 +/-    0.72  0.030 / 0.030
G13     316.1          21.8               11.7 +/-    1.82      24.6 +/-    1.82  0.030 / 0.030
G17     203.3          25.5               13.3 +/-    2.07      25.7 +/-    2.07  0.170 / 0.240
G18     91.2           22.0               11.0 +/-    2.58      23.0 +/-    2.58  0.110 / 0.180
G28     299.1          58.6               12.2 +/-    1.13      14.0 +/-    1.13  0.140 / 0.190
G30     354.6          71.7               12.8 +/-    0.80      13.4 +/-    0.80  0.150 / 0.210