PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/30-16:27:50
G07     31.4           69.5               13.1 +/-    0.82      13.9 +/-    0.82  0.040 / 0.060
G08     57.5           45.9               11.2 +/-    0.84      14.9 +/-    0.84  0.040 / 0.070
G09     178.8          42.9               14.1 +/-    1.98      19.7 +/-    1.98  0.030 / 0.040
G11     125.6          31.2               12.6 +/-    1.05      21.5 +/-    1.05  0.030 / 0.040
G18     109.9          13.3               12.7 +/-    3.38      32.8 +/-    3.38  0.040 / 0.050
G23     159.2          10.6               13.5 +/-    2.03      37.1 +/-    2.03  0.040 / 0.040
G27     38.4           12.3               10.5 +/-    2.79      27.8 +/-    2.79  0.090 / 0.160
G28     266.8          49.3               14.0 +/-    1.20      17.8 +/-    1.20  0.080 / 0.150
G30     326.4          55.6               12.3 +/-    0.95      14.6 +/-    0.95  0.160 / 0.380