PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/30-16:27:40
G07     31.4           69.5               12.6 +/-    0.50      13.3 +/-    0.50  0.050 / 0.060
G08     57.5           45.9               12.0 +/-    1.01      15.9 +/-    1.01  0.040 / 0.050
G09     178.8          42.9               13.6 +/-    0.75      18.9 +/-    0.75  0.030 / 0.030
G11     125.6          31.2               13.1 +/-    1.68      22.3 +/-    1.68  0.030 / 0.030
G18     109.9          13.3               12.5 +/-    2.78      32.4 +/-    2.78  0.040 / 0.040
G23     159.2          10.6               13.5 +/-    2.01      37.1 +/-    2.01  0.040 / 0.050
G27     38.4           12.3               10.2 +/-    2.20      27.1 +/-    2.20  0.150 / 0.290
G28     266.8          49.3               13.3 +/-    4.65      16.9 +/-    4.65  0.140 / 0.330
G30     326.4          55.6               12.4 +/-    0.69      14.7 +/-    0.69  0.180 / 0.410